As reported then, the mine is now estimated to contain 139,000 tons of higher confidence measured and indicated resources with an average grade of 0.88% U3O8, containing 2.434mln pounds of uranium.
There are 18,000 tons of inferred resources with an average grade of 0.38% U3O8 containing 134,000 pounds of uranium.
In addition, the main zone of the deposit is also estimated to contain 11.939mln pounds of copper contained in 101,000 tons of measured and indicated mineral resources with an average grade of 5.93% of the red metal.
In August the firm said that total uranium resources at the wholly-owned mine in Coconino County had been lifted by an estimated 1mln pounds, more or less, of triuranium octoxide (U3O8).
Energy Fuels holds three of America's key uranium production centres - the White Mesa mill in Utah, the Nichols Ranch processing facility in Wyoming and the Alta Mesa project in Texas.
Energy Fuels shares were unchanged in Toronto at C$1.76.